Hey All,
I have a dataset(dat1) like this:
ObsNumber ID Weight
1 0001 12
2 0001 13
3 0001 14
4 0002 16
5 0002 17
And another dataset(dat2) like this:
ID Height
0001 3.2
0001 2.6
0001 3.2
0002 2.2
0002 2.6
I want to merge dat1 and dat2 based on "ID" in order, I know "match" only
returns the first match it finds. So I am thinking create unique ID col in
dat2 and dat2, then merge. But I dont know how to do that so it can be like
this:
dat1:
ObsNumber ID Weight UniqueID
1 0001 12 0001_1
2 0001 13 0001_2
3 0001 14 0001_3
4 0002 16 0002_1
5 0002 17 0002_1
dat2:
ID Height UniqueID
0001 3.2 0001_1
0001 2.6 0001_2
0001 3.2 0001_3
0002 2.2 0002_1
0002 2.6 0002_2
Or if it is possible to merge dat1 and dat2 by matching "ID" but return the
match in order that would be great!
Thanks for your help!
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